there is power. The control panel lights up, it makes a clicking noise, we're able to set the temp and the temp shows on the control panel but then it shuts off immediately and the control panel is blank except for the time display. It will not preheat or heat. It shuts off immediately after we turn it on and set the temp.The fan is working by the way.

Well yeah, the whole unit shuts off and stops heating and reverts back to the clock. If my husband continues to turn it back on over and over again, the oven heats for the 10 seconds it's on each time but just can't bake anything like that. :-)

You are getting a signal back to the board through ground more than likely. You may have a wire rubbed through and touching the frame. ALso based on that model, when did you get a new control board as I am showing nothing available for it.